JEE Main 2018 — Sequences and Series Question with Solution
JEE Main 2018 (15 Apr Shift 2 Online)
Question
If are in A.P. and are in G.P. such that and , then the value of is
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
are in A.P. then
also it is given that,
Again it is given that, are in G.P. then
From (1), (2) and (3), we get;
Case I:
(not possible as
Case II:
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This is a previous-year question from JEE Main 2018, covering the Sequences and Series chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.